We do have a shotshell holder that is capable of carrying 20 Gauge rounds, as well as 12 Gauge rounds. The shotshell is made with expandable elastic material, which will allow you to hold up to 5 shells. The shotshell holder mounts directly onto the buttstock for easy access to your shells. The part number for this shotshell holder is SHO6300.

I hope this helps. If you have any further questions, please feel free to ask.

Josh, I installed the holder and the only problem is that I had to remove the cheek guard from the foldable stock in order to install it. One of the main reasons I got the ATI foldable stock is it had the cheek guard so, having to remove it would not have been one of my main choices. So I'm very limited with my options when it comes to carrying additional shells. If I keep the cheek guard my only other option will be to get a sling that holds the extra cartridges. Oh well, the beat goes on